Homogeneity Measurement of Optical Materials by a Digital Wavefront Interferometer
光学精密工程1990年0卷第2期 页码:16-21
作者机构:
湖北5108厂
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DOI:
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网络出版日期:1990-04-15,
纸质出版日期:1990-04-15
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许卫刚. 数字波面干涉仪测试光学材料均匀性[J]. 光学精密工程, 1990,(2): 16-21
Xu Weigang. Homogeneity Measurement of Optical Materials by a Digital Wavefront Interferometer[J]. Editorial Office of Optics and Precision Engineering, 1990,(2): 16-21
Xu Weigang. Homogeneity Measurement of Optical Materials by a Digital Wavefront Interferometer[J]. Editorial Office of Optics and Precision Engineering, 1990,(2): 16-21DOI:
This paper describes a method for the homogeneity measurement of optical material which is free from the system errors and the sample geometrical errors. Using a microcomputer the variations of the refractive index and the thickness apart from a linear slop can be measured accurately by means of analyzing and processing four interferograms. Measurement results of two pieces of glass are given with the accuracy analysis.It shows the accuracy is 0.0000004 for a 2.5 cm thick sample.